Best. Music. Game. Ever.
Full band instrumentation? Check
A ton of songs available on the game disk? Yes
A ton of forth-coming downloadable content? Yup
Online play? Oh yeah
Practice mode? Definitely
These features sealed the deal. This game is fantastic. While I'm partial to the drums and bass, the guitar is fun, and the singing mechanics blew me away.
I grew hesitant when I heard that Rock Band 2 was in production, but breathed relief the moment I heard that "most" songs (both on the RB 1 disk and DLC) were going to be forwards compatible with the new iteration, AND that all instruments would be as well.
Then again, that new premium drum set for $300 looks pretty sweet. But knowing that I don't HAVE to buy it rocks (heh).